Boring-machine.



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BORING MACHINE- APPLICATION nuqmm. 25. mg.

Patented July 27, 1915.

. THEODORE F. SEITZ, 0F SULLIVAN, INDIANA.

BORING-MACHINE;

To all whom it may concern:

Be it known that I, THEODORE F. Snrrz, a citizen of the United States,residing at Sullivan, in the county of Sullivan and deep boringisrequired in conjunction with the use of tubular casing, and my object,primarily, is to dispense with the use of tools which require thepowerrto be applied thereto directly at the ground surface regardlessof'the depth of thebore and to apply said power within said boresubstantially atthe point where the work is to be done.

A further object is' to utilize said device in conjunction with a hollowcylinder adapted to be raised and lowered within a casing, said cylinderbeing arranged to contain a.

motor in operative connection with a boring tool, the whole being soarranged that the latter or a portion thereof, may be operated I toclose the bottom of the movable cylinder,

thereby transforming'the same into a bailing bucket for removing theborings from time to time as required during the progress' of the work.p

Tothese, and other subsidiary ends, my invention consists in thecombination of elements hereinafter more particularly described anddefinitely pointed out in the claims.

In the drawings-Figure 1 is a vertical sectional view of a portion of awell and well casing, showing a combined bucket and cage grippingmechanism, motor and boring device as they would appear whenin use inthe bottom of a well. Fig.2 is a sectional view in plan, taken upon theline 2-2, Fig. 1, Fig. 3 is a like sectional view taken upon the line3-3, and Fig. 4 is an elevation of a modified form of drill.

Referring to the drawings, 1, indicates a tubular metallic casing suchas is usually employed in a well known way n connec tion with boredwells, said casing being Specification of Letters Patent.

shown within a bore 2. The casing ma e I Patented July 2?, 1915.

Application filed March 25, 1914. Serial No. 827,138. I

assumed to be lowered step by step at intervals as heretofore commonlypractised or continuously. Loosely fitted within the casing so as totelescope therewith, is a cylindrical or tubular'member 3, preferablyformed from steel tubing,

which is open at the bottom.

Inasmuch as an important function of the member 3 is to serve as abucket in conjunction with other uses, I shall hereafter refer to thesame as a bucket or bucket member. Tapped into the upper end of saidbucket is a relatively thick elongated annular member 4, Figs; 1 and 2,which is secured against rotary displacement by means of a pin 5. Theouter diameter of the upper portion of the part 4, conformssubstantially. to that of the bucket,

and the main dpurpose-of making the walls thicker is to a d weight tothe bucket to act in conjunction with suitable clamping devices, inclamping the bucket to thecasing.

Cut. through the walls of the member 4, are openings 6, preferably four,adapted for the receptionof clamping dogs, generally designated by 7,whichpass loosely through said openings and are jointedly connected bymeans of pins '8 to lugs upon a rin 9-, placed loosely within the part4, an so arrangedthat its lower face will lie in a plane somewhatbeneath the level of the lower end .of said part 4. Said dogs areelbow-shaped as shown and are provided with upwardly and outwardlyinclined faces 10, adapted to be engaged by counterpart inwardly anddownwardly inclined faces or cams 11, formed in the recesses .oropenings 6. The outer or engaging faces of the clamping dogs 7, areserrated as shown at 12, to enable them to firmly grip the casing 1,when pressed against it as hereinafter described. The purpose of thering 9, is to release said dogs "by the action of gravity when not sopressed and when support is withdrawn from beneath the ring.

An electri motor 13,- of any approved type, is provided with acylindrical casing which is loosely fitted within the bucket 3. Splines14, one of which is shown in Fig. 1, are formed upon the motor casingand arranged'to fit in grooves'15, Figs. 1 and 3, in the bucket.Connected with the armature of the motor is a shaft 16, to the lower endof which is detachably secured in a well known way, a boring toolgenerally designated by 17, having rotary cuttersf 18.

Formed .upon the top of the tool is ajs'hort cylindrical portion 19,corresponding substantially to the inner diameter ofthe bucket, so thatwhen the motor and shaft are lifted as hereinafter described, the part19, will enter the lower end of the bucket, while the shoulder 20 uponthe'main body will abut against the lower end of said bucket, therebymaking a complete closure, so that the boring tool will in effect formthe,bot'-- tom of the bucket.

Inasmuch as the tool is intended to be raised and lowered through thecasing 1, it follows that its diameter must be somewhat less than theinterior diameter of the latter, and hence means should be provided forenlarging the bore to a size sufii- .cient to receive said casing.Thismay be accomplished as follows: Formed in the periphery of the drill17, are a plurality of recesses into each of which is pivoted, as

shown at 21, a cutter 22, which is yieldingly held in an operative orextended position by means of a spring 23. Said cutters are of a lengthto enable them to extend laterally beneath the casing, thereby forming abore of sufliciently large diameter to receive said casing. The upperportions of the cutters are rounded as shown, so that when the tool isdrawn upwardly within the casing,

' the cutters willbe engaged bysaid casing and forced intothenrespective recesses.

against the action of the springs 23.

Formed upon the top of the motor casing 13, is a loop or'eye 24, whichserves as a means for suspending said casing from a cable '25, extendingdownwardly from a Windlass, not shown, at the top of the bore. Anelectrical'cable 26, likewise wound upon a Windlass, is connected in awell known way with the motor coils. I

. A'cable 27, Fig. 1, is attached to an eye 28, upon theupper end of theannular part 4, which cable, like the others is attached to a suitableWindlass, not shown, at the top ofthe well and so arranged as to beoperated independently of the other cables.

The device is intended to be operated asfollows: A section of the casingis supported in a well known manner upon the surface of the ground withthe bucket 3 therein; said bucket in turn, having the motor and drilloperatively connected therewith in the manner described. The motor isheld suspended in the upper part of the inner ends of the dogs againstbucket, and when the bucket is lowered so that its lower end will be ator near the lower end of the casing, the cable 25 maybe slightlywound'up so that the to motor casing may engage with an lift the ring 9.This action serves to su port thedbwnward movement while the serratedfaces thereof are in contact with the inner surface of the Q the boringtool, the motor of the 1 the latter is allowed to rest thereon. Uponcable27, the

slackening the tension of the cam surfaces 11, will act upon theinclined faces 10 of the dogs and cause the serrated I faces to griptheinner surface of the casing 1, thereby clamping the bucket againstvertical or rotary movement; it being understood that the Weight ofbucket and part 4, acting sureand maintain said clamping action. Thecasing 1 may be held rigidly in place 1 and locked against rotarymovement in any well known way. When theparts are thus secured theelectric circuit is closed between the motor and a generator, thusactuating and tool being through said cams and dogs serves to inloweredby means of the cable'25, as the I work progresses.

When the drill descends to a depth corresponding substantially to thelengthof the' shaft '16, the electric current is turned off and thecable 27, is wound up until the clamping dogs 7 are released. Thereupon,

the bucket is lowered until its lower end incloses the part 19 and abutsagainst-the part 20. Itw1ll thus be seen that the V part 19, serves toclosethe lower end ofthe bucket and to form a bottom therefor. UponWlIldlIlg up the cables 25 and 27 the bucket 3, which, presumably, isfilled Withcuttings, and for the time being becomes a bailing-bucket,may be withdrawn from the I casing and the boringstherein discharged.The casing'l, may then be lowered to =thebottom of the bore and heldagainst rotary movement, when the bucket may-again be T inserted,clamped therein, and the operation repeated.

It",is understood that water may be suppl ed to the bore in any wellknown way' to ,aid the process and for this purpose an opening orpassage may be made through or around the motor casing. v

It is obvious that the drill or auger may be variedaccording to therequirements of thework; but inasmuch as it is necessary to lower thecasing as the boring tool is advanced, it is essential that undercuttingmeans, such, for example, as the cutters 22,

should be employed to make the ;bore of a sufiicient diameter to receivethe'casing.

In Fig. 4, I have shown a modified form of boring tool28, having thecutters 22 se cured in recesses 29,-therein in, the same manner as isshown-in Fig. 1.

I do not wish tobe limited to the exact construction, shown, inasmuch.as'it may be varied in form and character without departing from {thespirit of the invention. For example, it is apparent that the motor maybe placed above the bucket and allowed but a slight vertical movement,in which case by lowering the bucket itself as the work progresses thesame result may be accomplished.

Having thus described my invention, 1 claim:

1. A device of the class described, comprising a tubular member open atthe bottom to be operated within a casing, means for raising andlowering-said member within a casing, meansfor temporarily locking thesame against movement therein, a motor supported by said tubular member,a boring tool arranged to be driven by said motor, means for imparting avertical movement to said tool independent of said tubular member andmeans supported by said tool for closing the bottom of said tubularmember when the tool is raised to-substantially its maximum height withrespect thereto 2. In a well boring machine, the combination with atubular member adapted to have telescopic movement within a casing, saidmember being normally open at the bottom, of a motor in operativeconnection with said tubular member, a drill'to be driven thereby, meanscontrolled by the movement of said drill for closing the bottom of saidmember at a predetermined time, means actuated by the gravity of saidmember for clamping the same within a casing, and means for imparting avertical movement to said tool and tubular member independently of. eachother.

3. A well boring machine comprising a hollow cylindrical member adaptedto form a support for a motor and boring tool, a motor and boring tool,the latter having a vertical movement-to enable it to close the lowerend of said member, means for raising and lowering said member and meansfor independently raising and lowering said tool, whereby saidcylindrical member may form a bailing bucket for removing the boringsmade by the tool.

4. A well boring machine comprising a hollow cylindrical member adaptedto form a support for a motor and boring tool, a motor and boring tool,the latter having a vertical movement to enable it to close the lowerend of said member, means for independently raising and lowering saidtool, clamping dogs in operative connection with said member forengaging an outer casing, means controlled by the gravity of said memberfor holding said dogsin clamping relation and means for arbitrarilyholding said dogs in a predetermined relation to,

. said member to initiate the engagement thereof.

5. A boring machine comprising, in combination, a hollow cylindricalmember adapted to telescope within a permanent member within said casingat a predeter mined height, a motor located within said cyhndricalmember, means for preventing rotation of the motor casing within saidcylindrical member while leaving it free to be moved vertically, aboring tool in operative connection with said motor, means held by saidtool for closing the lower end of said cylindrical member when the motoris lifted to its maximum height therein, and means for simultaneouslyraising and lowering said motor, boring-tool and cylindrical member.

6. A boring machine, comprising in combination, a hollow cylindricalmember adapted to telescope within a permanent casing, means foradjustably clamping said member within said casing at a predeterminedheight, a motor located within said cylindrical member, the length ofwhich is materially less than that of said member, means for preventingthe rotation of the .motor casing within said member while leaving itfree to be raised and lowered therein, a boring tool having a shaftextending downwardly from said motor, means supported by said shaft forclosing the lower end of said cylindrical member when the motor islifted to its maximum height therein, means for raising and loweringsaid cylindrical member, andseparate means for raising and. loweringsaid motor within said cylindrical member when the latter is at rest.

7 .A boring machine, comprising in combination, a hollow cylindricalmember adapted to telescope within a permanent casing, means foradjustably clamping said member within said casing at a predeterminedheight, a motor located within said cylindrical member, the length ofwhich is materially less than that of said member, means for preventingthe rotation of the motor casing within said member while, leaving itfree to be raised and lowered therein, means for raising and lowering ittherein while the latter is at rest, a boring tool having a shaft, theupper end of which is connected with said motor, means, controlled bysaid shaft for closing the lower end of said cylindrical member, andmeans for simultaneously lifting said cylindrical member and motor outof the permanent casing.

In testimony whereof, I have signed thisspecification in the presence oftwo subscribing witnesses.

THEODORE F. SEITZ.

